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Conference Paper

Periodicity Analysis of Mrk 501 and Mrk 421 in Gamma Rays

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Arras,  P.
Computational Structure Formation, MPI for Astrophysics, Max Planck Society;

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Ensslin,  T.
Computational Structure Formation, MPI for Astrophysics, Max Planck Society;

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Kostić,  A.
Computational Structure Formation, MPI for Astrophysics, Max Planck Society;

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Citation

Iotov, R., Arbet-Engels, A., Arras, P., Baack, D., Balbo, M., Biland, A., et al. (2022). Periodicity Analysis of Mrk 501 and Mrk 421 in Gamma Rays. Proceedings of Science, 395: 879. doi:10.22323/1.395.0879.


Cite as: https://hdl.handle.net/21.11116/0000-000E-0EE8-E
Abstract
Blazars, a subclass of active galactic nuclei (AGNs), are highly variable objects. Quasiperiodic oscillations (QPOs), which might originate from a binary black hole located at the AGN core,have been found in some blazar light curves. For the blazars Mrk 421 and Mrk 501, we test the possible QPO behavior using a variety of methods (generalized Lomb-Scargle periodogram,continuous-time autoregressive moving average models, wavelet scalograms, and A−T plane), studying systematic effects in detail. We use gamma-ray light curves from FACT, a ground-based imaging air